Abstract: A series of uniaxial compression tests were performed on four types of typical intact rock core samples (basalt, sandstone, limestone and tuff) in Zhejiang area to investigation the acoustic emission in the entire rock compression tests process. The results show that (1) the acoustic emission characteristics of limestone and sandstone under the uniaxial compression are similar, and a large number of acoustic emission events mainly occur when the rock is close to the failure, which is significantly different from the acoustic emission characteristics of tuff and basalt rock samples; (2) when the compressive stress of tuff is close to 0.4 times the peak compressive strength, the acoustic emission events increase more obviously, and occur in large amounts when the rock sample is close to failure; (3) a large number of acoustic emission events occur in the entire process before the failure of basalt, and a more obvious step-by-step progressive ascending change feature is shown. The research results can provide a reference for the acoustic emission monitoring and the early warning of rock landslides in Zhejiang area.

Key words: Acoustic Emission, Uniaxial Compression Test, Intact Rock Samples, Cumulative Ring Counts, Cumulative Energy